<aside class="main-sidebar" >
  <!-- sidebar: style can be found in sidebar.less -->
  <section class="sidebar">
    <!-- Sidebar user panel -->
    <div class="user-panel">
      <div class="pull-left image">
        <img src="${lte}/dist/img/user2-160x160.jpg" class="img-circle" alt="User Image">
      </div>
      <div class="pull-left info">
        <p>用户名</p>
        <a href="#"><i class="fa fa-user text-success"></i> 职位</a>
      </div>
    </div>
    <!-- search form -->
    <form action="#" method="get" class="sidebar-form">
      <div class="input-group">
        <input type="text" name="q" class="form-control" placeholder="Search...">
              <span class="input-group-btn">
                <button type="submit" name="search" id="search-btn" class="btn btn-flat"><i class="fa fa-search"></i>
                </button>
              </span>
      </div>
    </form>
    <!-- /.search form -->
    <!-- sidebar menu: : style can be found in sidebar.less -->
    <ul class="sidebar-menu">
      <li class="active">
        <a href="documentation/index.html"><i class="fa fa-book"></i> <span>首页</span></a>
      </li>
      <li class="treeview">
        <a href="#">
          <i class="fa fa-share"></i> <span>系统管理</span>
          <i class="fa fa-angle-left pull-right"></i>
        </a>
        <ul class="treeview-menu">
          <li><a href="#"><i class="fa fa-share"></i> Level One</a></li>
          <li>
            <a href="#"><i class="fa fa-share"></i> Level One <i class="fa fa-angle-left pull-right"></i></a>
            <ul class="treeview-menu">
              <li><a href="#"><i class="fa fa-share"></i> Level Two</a></li>
              <li>
                <a href="#"><i class="fa fa-share"></i> Level Two <i class="fa fa-angle-left pull-right"></i></a>
                <ul class="treeview-menu">
                  <li><a href="#"><i class="fa fa-share"></i> Level Three</a></li>
                  <li><a href="#"><i class="fa fa-share"></i> Level Three</a></li>
                </ul>
              </li>
            </ul>
          </li>
          <li><a href="#"><i class="fa fa-circle-o"></i> Level One</a></li>
        </ul>
      </li>
    </ul>
  </section>
  <!-- /.sidebar -->
</aside>